control key

testLocalTimer/mainwindow.cpp

@@ -2,6 +2,7 @@
 #include "ui_mainwindow.h"
 #include <QLabel>
 #include <QDateTime>
+#include <QKeyEvent>
 
 MainWindow::MainWindow(QWidget *parent) :
     QMainWindow(parent),
@@ -13,6 +14,19 @@ MainWindow::MainWindow(QWidget *parent) :
     timer.start();
 }
 
+void MainWindow::keyPressEvent(QKeyEvent * key) {
+
+    if (key->key() == Qt::Key_Space) {
+        if (timer.isActive()) {
+            timer.stop();
+        } else {
+            timer.start();
+        }
+    }
+
+
+}
+
 MainWindow::~MainWindow() {
     delete ui;
 }
@@ -21,15 +35,5 @@ void MainWindow::handleTick() {
 
     auto time = QDateTime::currentMSecsSinceEpoch();
 
-    ui->msec->setText(QString::number( time% 1000));
+    ui->msec->setText(QString::number(time));
-
-    if (!(time % 1000)) {
-        if (color == Qt::white) {
-            color = Qt::green;
-        } else {
-            color = Qt::white;
-        }
-
-        ui->color->setStyleSheet(QString("background-color: '%0';").arg(color.name(QColor::HexRgb)));
-    }
 }

testLocalTimer/mainwindow.h

@@ -14,6 +14,7 @@ class MainWindow : public QMainWindow
 
 public:
     explicit MainWindow(QWidget *parent = nullptr);
+    void keyPressEvent(QKeyEvent*);
     ~MainWindow();
 
 private:

testLocalTimer/mainwindow.ui

@@ -19,19 +19,21 @@
      <layout class="QVBoxLayout" name="verticalLayout">
       <item>
        <widget class="QLabel" name="msec">
-        <property name="text">
-         <string/>
-        </property>
-       </widget>
-      </item>
-      <item>
-       <widget class="QLabel" name="color">
         <property name="styleSheet">
-         <string notr="true">background-color: rgb(138, 226, 52);</string>
+         <string notr="true">font: 48pt &quot;Ubuntu&quot;;</string>
         </property>
         <property name="text">
          <string/>
         </property>
+        <property name="scaledContents">
+         <bool>true</bool>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignCenter</set>
+        </property>
+        <property name="textInteractionFlags">
+         <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByKeyboard|Qt::TextSelectableByMouse</set>
+        </property>
        </widget>
       </item>
      </layout>